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Re: [Paparazzi-devel] Spektrum main reciever as servo output port

From: Christophe De Wagter
Subject: Re: [Paparazzi-devel] Spektrum main reciever as servo output port
Date: Mon, 19 Mar 2012 12:31:09 +0100

If the GPS can be configured to work at Spektrum baudrate, you could reuse its unused Tx pin indeed.

But why don't you use a specially designed servo driver like pololu or something like that?


On Mon, Mar 19, 2012 at 12:27 PM, Eric Parsonage <address@hidden> wrote:

Defnitely we understand the spectrum satellite output format. So yes we can get the signal to the receiver but then the logic within the receiver will pick the best signal given by least errors and signal strength.

I suppose we could use a gpio to purposely pull low the signal line from the main receivers RF module thus corrupting its signal (when you open the main receiver you can see the RF module is the same as those in the spectrum) this should force the receiver to use the data from the satellite input (i.e. output from twog).

I am not sure if this helps.

There is another alternative JR make a main receiver that has no internal receivers but can take as many as 4 satellites this would be easy to do the above with and requires no hacking of the main receiver.


On 19/03/2012, at 8:53 PM, Gareth Roberts wrote:

> Hi,
> I'm not sure that would work without modifications to the receiver, as both Spektrum main receiver + satellite receiver contain radio receivers for diversity.
> Presumably, you'd upset whatever data fusion algorithm they are using to check for bad packets/false values, unless you destroyed or disconnected the radio stage in the main receiver.
> Cheers,
> Gareth
> On Sat, 17 Mar 2012 11:10:29 -0000, Prof. Dr.-Ing. Heinrich Warmers <address@hidden> wrote:
>> Hi,
>> i have the following question:
>> Is it possible to use the  free TWOG  uart output (GPS) to simulate a satellite receiver and to use the spectrum  main receiver for the servo connections?
>> By isolation the main receiver antenna the signals for the satellite are used.
>> Heinrich
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>> Paparazzi-devel mailing list
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